]> git.proxmox.com Git - mirror_qemu.git/blobdiff - target/i386/cpu.c
i386: Introduce SnowRidge CPU model
[mirror_qemu.git] / target / i386 / cpu.c
index 6b3d0035e0f6d80e198ff4cc3c36ab4711dbe24a..62043fee540547287686806ab4acfee8709ab6c9 100644 (file)
@@ -2688,6 +2688,77 @@ static X86CPUDefinition builtin_x86_defs[] = {
         .xlevel = 0x80000008,
         .model_id = "Intel Xeon Processor (Icelake)",
     },
+    {
+        .name = "SnowRidge-Server",
+        .level = 27,
+        .vendor = CPUID_VENDOR_INTEL,
+        .family = 6,
+        .model = 134,
+        .stepping = 1,
+        .features[FEAT_1_EDX] =
+            /* missing: CPUID_PN CPUID_IA64 */
+            /* missing: CPUID_DTS, CPUID_HT, CPUID_TM, CPUID_PBE */
+            CPUID_FP87 | CPUID_VME | CPUID_DE | CPUID_PSE |
+            CPUID_TSC | CPUID_MSR | CPUID_PAE | CPUID_MCE |
+            CPUID_CX8 | CPUID_APIC | CPUID_SEP |
+            CPUID_MTRR | CPUID_PGE | CPUID_MCA | CPUID_CMOV |
+            CPUID_PAT | CPUID_PSE36 | CPUID_CLFLUSH |
+            CPUID_MMX |
+            CPUID_FXSR | CPUID_SSE | CPUID_SSE2,
+        .features[FEAT_1_ECX] =
+            CPUID_EXT_SSE3 | CPUID_EXT_PCLMULQDQ | CPUID_EXT_MONITOR |
+            CPUID_EXT_VMX |
+            CPUID_EXT_SSSE3 |
+            CPUID_EXT_CX16 |
+            CPUID_EXT_SSE41 |
+            CPUID_EXT_SSE42 | CPUID_EXT_X2APIC | CPUID_EXT_MOVBE |
+            CPUID_EXT_POPCNT |
+            CPUID_EXT_TSC_DEADLINE_TIMER | CPUID_EXT_AES | CPUID_EXT_XSAVE |
+            CPUID_EXT_RDRAND,
+        .features[FEAT_8000_0001_EDX] =
+            CPUID_EXT2_SYSCALL |
+            CPUID_EXT2_NX |
+            CPUID_EXT2_PDPE1GB | CPUID_EXT2_RDTSCP |
+            CPUID_EXT2_LM,
+        .features[FEAT_8000_0001_ECX] =
+            CPUID_EXT3_LAHF_LM |
+            CPUID_EXT3_3DNOWPREFETCH,
+        .features[FEAT_7_0_EBX] =
+            CPUID_7_0_EBX_FSGSBASE |
+            CPUID_7_0_EBX_SMEP |
+            CPUID_7_0_EBX_ERMS |
+            CPUID_7_0_EBX_MPX |  /* missing bits 13, 15 */
+            CPUID_7_0_EBX_RDSEED |
+            CPUID_7_0_EBX_SMAP | CPUID_7_0_EBX_CLFLUSHOPT |
+            CPUID_7_0_EBX_CLWB |
+            CPUID_7_0_EBX_SHA_NI,
+        .features[FEAT_7_0_ECX] =
+            CPUID_7_0_ECX_UMIP |
+            /* missing bit 5 */
+            CPUID_7_0_ECX_GFNI |
+            CPUID_7_0_ECX_MOVDIRI | CPUID_7_0_ECX_CLDEMOTE |
+            CPUID_7_0_ECX_MOVDIR64B,
+        .features[FEAT_7_0_EDX] =
+            CPUID_7_0_EDX_SPEC_CTRL |
+            CPUID_7_0_EDX_ARCH_CAPABILITIES | CPUID_7_0_EDX_SPEC_CTRL_SSBD |
+            CPUID_7_0_EDX_CORE_CAPABILITY,
+        .features[FEAT_CORE_CAPABILITY] =
+            MSR_CORE_CAP_SPLIT_LOCK_DETECT,
+        /*
+         * Missing: XSAVES (not supported by some Linux versions,
+         * including v4.1 to v4.12).
+         * KVM doesn't yet expose any XSAVES state save component,
+         * and the only one defined in Skylake (processor tracing)
+         * probably will block migration anyway.
+         */
+        .features[FEAT_XSAVE] =
+            CPUID_XSAVE_XSAVEOPT | CPUID_XSAVE_XSAVEC |
+            CPUID_XSAVE_XGETBV1,
+        .features[FEAT_6_EAX] =
+            CPUID_6_EAX_ARAT,
+        .xlevel = 0x80000008,
+        .model_id = "Intel Atom Processor (SnowRidge)",
+    },
     {
         .name = "KnightsMill",
         .level = 0xd,
@@ -3134,14 +3205,8 @@ static void max_x86_cpu_initfn(Object *obj)
         char vendor[CPUID_VENDOR_SZ + 1] = { 0 };
         char model_id[CPUID_MODEL_ID_SZ + 1] = { 0 };
         int family, model, stepping;
-        X86CPUDefinition host_cpudef = { };
-        uint32_t eax = 0, ebx = 0, ecx = 0, edx = 0;
-
-        host_cpuid(0x0, 0, &eax, &ebx, &ecx, &edx);
-        x86_cpu_vendor_words2str(host_cpudef.vendor, ebx, edx, ecx);
 
         host_vendor_fms(vendor, &family, &model, &stepping);
-
         cpu_x86_fill_model_id(model_id);
 
         object_property_set_str(OBJECT(cpu), vendor, "vendor", &error_abort);
@@ -3518,46 +3583,6 @@ static void x86_cpu_get_feature_words(Object *obj, Visitor *v,
     visit_type_X86CPUFeatureWordInfoList(v, "feature-words", &list, errp);
 }
 
-static void x86_get_hv_spinlocks(Object *obj, Visitor *v, const char *name,
-                                 void *opaque, Error **errp)
-{
-    X86CPU *cpu = X86_CPU(obj);
-    int64_t value = cpu->hyperv_spinlock_attempts;
-
-    visit_type_int(v, name, &value, errp);
-}
-
-static void x86_set_hv_spinlocks(Object *obj, Visitor *v, const char *name,
-                                 void *opaque, Error **errp)
-{
-    const int64_t min = 0xFFF;
-    const int64_t max = UINT_MAX;
-    X86CPU *cpu = X86_CPU(obj);
-    Error *err = NULL;
-    int64_t value;
-
-    visit_type_int(v, name, &value, &err);
-    if (err) {
-        error_propagate(errp, err);
-        return;
-    }
-
-    if (value < min || value > max) {
-        error_setg(errp, "Property %s.%s doesn't take value %" PRId64
-                   " (minimum: %" PRId64 ", maximum: %" PRId64 ")",
-                   object_get_typename(obj), name ? name : "null",
-                   value, min, max);
-        return;
-    }
-    cpu->hyperv_spinlock_attempts = value;
-}
-
-static const PropertyInfo qdev_prop_spinlocks = {
-    .name  = "int",
-    .get   = x86_get_hv_spinlocks,
-    .set   = x86_set_hv_spinlocks,
-};
-
 /* Convert all '_' in a feature string option name to '-', to make feature
  * name conform to QOM property naming rule, which uses '-' instead of '_'.
  */
@@ -4267,7 +4292,7 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count,
 {
     X86CPU *cpu = env_archcpu(env);
     CPUState *cs = env_cpu(env);
-    uint32_t pkg_offset;
+    uint32_t die_offset;
     uint32_t limit;
     uint32_t signature[3];
 
@@ -4356,10 +4381,11 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count,
                                     eax, ebx, ecx, edx);
                 break;
             case 3: /* L3 cache info */
-                pkg_offset = apicid_pkg_offset(cs->nr_cores, cs->nr_threads);
+                die_offset = apicid_die_offset(env->nr_dies,
+                                        cs->nr_cores, cs->nr_threads);
                 if (cpu->enable_l3_cache) {
                     encode_cache_cpuid4(env->cache_info_cpuid4.l3_cache,
-                                        (1 << pkg_offset), cs->nr_cores,
+                                        (1 << die_offset), cs->nr_cores,
                                         eax, ebx, ecx, edx);
                     break;
                 }
@@ -4441,12 +4467,14 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count,
 
         switch (count) {
         case 0:
-            *eax = apicid_core_offset(cs->nr_cores, cs->nr_threads);
+            *eax = apicid_core_offset(env->nr_dies,
+                                      cs->nr_cores, cs->nr_threads);
             *ebx = cs->nr_threads;
             *ecx |= CPUID_TOPOLOGY_LEVEL_SMT;
             break;
         case 1:
-            *eax = apicid_pkg_offset(cs->nr_cores, cs->nr_threads);
+            *eax = apicid_pkg_offset(env->nr_dies,
+                                     cs->nr_cores, cs->nr_threads);
             *ebx = cs->nr_cores * cs->nr_threads;
             *ecx |= CPUID_TOPOLOGY_LEVEL_CORE;
             break;
@@ -4456,6 +4484,42 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count,
             *ecx |= CPUID_TOPOLOGY_LEVEL_INVALID;
         }
 
+        assert(!(*eax & ~0x1f));
+        *ebx &= 0xffff; /* The count doesn't need to be reliable. */
+        break;
+    case 0x1F:
+        /* V2 Extended Topology Enumeration Leaf */
+        if (env->nr_dies < 2) {
+            *eax = *ebx = *ecx = *edx = 0;
+            break;
+        }
+
+        *ecx = count & 0xff;
+        *edx = cpu->apic_id;
+        switch (count) {
+        case 0:
+            *eax = apicid_core_offset(env->nr_dies, cs->nr_cores,
+                                                    cs->nr_threads);
+            *ebx = cs->nr_threads;
+            *ecx |= CPUID_TOPOLOGY_LEVEL_SMT;
+            break;
+        case 1:
+            *eax = apicid_die_offset(env->nr_dies, cs->nr_cores,
+                                                   cs->nr_threads);
+            *ebx = cs->nr_cores * cs->nr_threads;
+            *ecx |= CPUID_TOPOLOGY_LEVEL_CORE;
+            break;
+        case 2:
+            *eax = apicid_pkg_offset(env->nr_dies, cs->nr_cores,
+                                                   cs->nr_threads);
+            *ebx = env->nr_dies * cs->nr_cores * cs->nr_threads;
+            *ecx |= CPUID_TOPOLOGY_LEVEL_DIE;
+            break;
+        default:
+            *eax = 0;
+            *ebx = 0;
+            *ecx |= CPUID_TOPOLOGY_LEVEL_INVALID;
+        }
         assert(!(*eax & ~0x1f));
         *ebx &= 0xffff; /* The count doesn't need to be reliable. */
         break;
@@ -5137,6 +5201,11 @@ static void x86_cpu_expand_features(X86CPU *cpu, Error **errp)
             x86_cpu_adjust_level(cpu, &cpu->env.cpuid_min_level, 0x14);
         }
 
+        /* CPU topology with multi-dies support requires CPUID[0x1F] */
+        if (env->nr_dies > 1) {
+            x86_cpu_adjust_level(cpu, &env->cpuid_min_level, 0x1F);
+        }
+
         /* SVM requires CPUID[0x8000000A] */
         if (env->features[FEAT_8000_0001_ECX] & CPUID_EXT3_SVM) {
             x86_cpu_adjust_level(cpu, &env->cpuid_min_xlevel, 0x8000000A);
@@ -5290,15 +5359,6 @@ static void x86_cpu_realizefn(DeviceState *dev, Error **errp)
             uint32_t host_phys_bits = x86_host_phys_bits();
             static bool warned;
 
-            if (cpu->host_phys_bits) {
-                /* The user asked for us to use the host physical bits */
-                cpu->phys_bits = host_phys_bits;
-                if (cpu->host_phys_bits_limit &&
-                    cpu->phys_bits > cpu->host_phys_bits_limit) {
-                    cpu->phys_bits = cpu->host_phys_bits_limit;
-                }
-            }
-
             /* Print a warning if the user set it to a value that's not the
              * host value.
              */
@@ -5310,6 +5370,15 @@ static void x86_cpu_realizefn(DeviceState *dev, Error **errp)
                 warned = true;
             }
 
+            if (cpu->host_phys_bits) {
+                /* The user asked for us to use the host physical bits */
+                cpu->phys_bits = host_phys_bits;
+                if (cpu->host_phys_bits_limit &&
+                    cpu->phys_bits > cpu->host_phys_bits_limit) {
+                    cpu->phys_bits = cpu->host_phys_bits_limit;
+                }
+            }
+
             if (cpu->phys_bits &&
                 (cpu->phys_bits > TARGET_PHYS_ADDR_SPACE_BITS ||
                 cpu->phys_bits < 32)) {
@@ -5679,8 +5748,6 @@ static void x86_cpu_initfn(Object *obj)
     object_property_add(obj, "crash-information", "GuestPanicInformation",
                         x86_cpu_get_crash_info_qom, NULL, NULL, NULL, NULL);
 
-    cpu->hyperv_spinlock_attempts = HYPERV_SPINLOCK_NEVER_RETRY;
-
     for (w = 0; w < FEATURE_WORDS; w++) {
         int bitnr;
 
@@ -5877,7 +5944,8 @@ static Property x86_cpu_properties[] = {
     DEFINE_PROP_INT32("node-id", X86CPU, node_id, CPU_UNSET_NUMA_NODE_ID),
     DEFINE_PROP_BOOL("pmu", X86CPU, enable_pmu, false),
 
-    { .name  = "hv-spinlocks", .info  = &qdev_prop_spinlocks },
+    DEFINE_PROP_UINT32("hv-spinlocks", X86CPU, hyperv_spinlock_attempts,
+                       HYPERV_SPINLOCK_NEVER_RETRY),
     DEFINE_PROP_BIT64("hv-relaxed", X86CPU, hyperv_features,
                       HYPERV_FEAT_RELAXED, 0),
     DEFINE_PROP_BIT64("hv-vapic", X86CPU, hyperv_features,